v0.22.0

[0.22.0] - 2026-10-04

Changed

• Pin a3s-code-core and the interactive Code TUI to =9.1.2 at git rev
  439cc740f2520806bb06f6d6391100c236be8d1f (Code tag v9.1.2).
  a3s code exec links this revision. Interactive a3s code launches
  a3s-code-tui and a3s-code-acp built from the same revision, replacing
  the 9.1.1 pager shipped with 0.21.0.
• The 9.1.2 TUI shows the full completion-gate failure. The next fact run
  admits the permission posture selected for that session.